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We show the generation of fully uncorrelated photon pairs in an integrated device. A fully separable state is obtained by independent control over the quality factors of the resonances involved in the parametric fluorescence process.
We propose and demonstrate a thin Au stripe on a truncated 1D dielectric photonic crystal covered with Cytop as a waveguide for Bloch long-range surface plasmon polaritons.
We present an approach to the generation of path-encoded Greenberger-Horne-Zeilinger states in a single chip, by interfering four integrated microring resonators in which degenerate spontaneous four-wave mixing takes place.
We demonstrate the generation of W states entangled in the energy degree of freedom. Using a reduced density matrix approach, these states are characterized without the need for frequency conversion.
We show that Rabi-like coherent oscillations should be observable in integrated microresonators used for quantum frequency conversion, revealing a new regime of strongly coupled photonic modes.
Tripartite entangled states, such as Greenberger-Horne-Zeilinger (GHZ) and W states, are appealing for tests of fundamental aspects of quantum mechanics, as well as for implementations of quantum communication protocols. While the information is typically encoded in the polarization or path of the photons, we propose a feasible scheme to generate W states that are entangled in the energy degree of...
A few years ago, Konopsky showed that a one dimensional photonic crystal structure can be used on one side of a thin metal layer to mimic the optical properties of the material on the other side. Inspired by this approach and motivated by using LRSPP waveguides for biosensing, we propose and realized a thin metal stripe on a truncated SiO2/Ta2O5 multilayer stack to support a fully guided LRSPPs. These...
We demonstrate four-wave mixing in an integrated structure made of porous silicon, namely a microring resonator with a quality factor of several thousand, and estimate the corresponding effective third-order nonlinear coefficient.
We experimentally demonstrate the first Bloch surface wave ring resonator. Using a porous silicon material system, cavity confinement is achieved through a novel combination of total internal reflection and photonic band gap confinement mechanisms.
We realize the frequency-resolved reconstruction of the density matrix of polarization-entangled photon pairs by stimulated emission tomography. This approach enables deeper insight into the correlations between different degrees of freedom in the photon-pair source.
We demonstrate a fundamental limitation of the use of microresonators as heralded single photon sources. Such sources suffer from a tradeoff between heralding efficiency and heralding rate, which depend sensitively on the resonator-channel coupling.
We reconstruct the polarization-entangled state of individual frequency components of the biphoton wave function by stimulated emission tomography. The frequency-resolved polarization state enables new insight into frequency-polarization correlations of the quantum process.
With unprecedented resolution we measure the joint spectral density of photon pairs that would be generated by spontaneous four-wave-mixing in a silicon ring resonator, and show how the quantum correlations can be tailored.
We demonstrate the measurement of photon-pair joint spectral correlations in optical fiber through stimulated four-wave mixing. This method enables us to study correlations more easily, precisely and quickly than with traditional coincidence counting measurements.
We show that the characterization of the quantum correlations generated by a photon-pair source can be directly performed via a classical measurement leading to an unprecedented spectral resolution and a shorter integration time.
We investigate-light trapping in thin-film crystalline silicon solar cells with rough interfaces and engineered disordered photonic structures. The general aspects of the optical properties are discussed, demonstrating broad band absorption close to the Lambertian limit.
Birefringence in poled fiber enables the direct (compensation-free) generation of broadband polarization-entangled photon pairs. However, birefringence and pump detuning also affect the entangled state, a subject we investigate in this work theoretically and experimentally.
We show that the pair generation rate in spontaneous four-wave-mixing in a sequence of N resonators can scale quadratically with N as a result of a quantum interference in analogy with Dickie superradiant spontaneous emission.
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